I recently purchased a top end kit from niche industries. I have read the stuff posted on here about it and wanted to give some details about it. I'm not a mechanic by any means but I do know a little about casting and why these kits are so cheap. Mine is from parts discounter on eBay for $135. The cylinder seems pretty good. The holes for the head bolts and exhaust flange need to be cleaned. As many of you have also stated, all of the ports must be chamfered. There are some small casting defects inside the ports but nothing too serious.
The piston looks like crap. The best description of it I could give is that it looks like it is made of recycled matchbox cars. It is also very light in comparison to the bad piston I took out. All of the other parts appear to be fine.
I will be installing the kit this coming weekend and will give updates. I will probably be using a pro x piston.
The piston looks like crap. The best description of it I could give is that it looks like it is made of recycled matchbox cars. It is also very light in comparison to the bad piston I took out. All of the other parts appear to be fine.